名詞 fontanel:

1. any membranous gap between the bones of the cranium in an infant or fetus
   同義詞：fontanelle, soft spot

fontanel 也作 fon.ta.nelle

n.（名詞）
Any of the soft membranous gaps between the incompletely formed cranial bones of a fetus or an infant.Also called soft spot
囟門：一柔軟的膜狀口，在胎兒或嬰兒的未完全發(fā)育好的頭顱骨頭之間也作 soft spot

來源：
Middle English fontinel
中古英語 fontinel
from Old French fontanele [diminutive of] fontaine [fountain] * see fountain
源自 古法語 fontanele [] fontaine的小后綴 [噴泉] *參見 fountain